Parking Lot Construction in Seattle, Washington

Full ground-up parking lot construction including excavation, subbase, asphalt, concrete curbing, striping, lighting, and drainage. In Seattle, pricing typically runs $3.74 to $8.63 per sq ft (full-depth new construction) — about 15% above the national average. Wet coastal Pacific with low UV but heavy rainfall saturation — drainage design is everything. Glacial till with variable silt layers — perched water tables complicate subgrade. Permitted through Seattle Department of Construction and Inspections; typical review window 12-20 weeks with Green Factor and stormwater overlay.